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How many atoms of each constituent element are present in 50 g of CaCO_(3) ? |
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Answer» 100.0 grams of `CaCO_(3)=1` gram mol 50.0 grams of `CaCO_(3) = (50.0)/(100.0) =0.5` gram mol. One gram mole of `CaCO_(3)` contain Ca ATOMS `= 6.022 xx 10^(23)` atoms 0.5 gram mole of `CaCO_(3)` contain Ca atoms `= 6.022xx10^(23) xx 0.5 = 3.01 xx 10^(23)` One gram mole of `CaCO_(3)` contain CARBON atoms `= 6.022 xx 10^(23)` atoms 0.5 gram mole `CaCO_(3)` contain carbon atoms `= 3.01 xx 10^(23)` atoms One gram mole of `CaCO_(3)` contain oxygen atoms `= 3 xx 6.022 xx 10^(23)` atoms 0.5 gram mole of `CaCO_(3)` contain oxygen atoms `= 0.5 xx 3 xx 6.022 xx 10^(23) = 9.03 xx 10^(23)` atoms. |
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